/*
 * Copyright (c) 2014-2025 Stream.io Inc. All rights reserved.
 *
 * Licensed under the Stream License;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    https://github.com/GetStream/stream-chat-android/blob/main/LICENSE
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.getstream.chat.android.compose.ui.channel.attachments

import android.text.format.DateUtils
import io.getstream.chat.android.client.extensions.getCreatedAtOrThrow
import io.getstream.chat.android.ui.common.state.channel.attachments.ChannelAttachmentsViewState
import java.util.Date

internal object ChannelAttachmentsDefaults {

    /**
     * The key selector used to group items by the relative time span of their creation date,
     * skipping the day of the month.
     * This is used to create headers in the channel attachments list/grid.
     */
    val HeaderKeySelector = { item: ChannelAttachmentsViewState.Content.Item ->
        DateUtils.getRelativeTimeSpanString(
            item.message.getCreatedAtOrThrow().time,
            Date().time,
            DateUtils.DAY_IN_MILLIS,
            DateUtils.FORMAT_NO_MONTH_DAY,
        ).toString()
    }
}
